Abstract
Neodymium doped sodium strontium borate (Nd3+:NaSrB) glass system has been synthesized using conventional melt quenching technique. X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, Diffused reflectance spectro-scopy (DRS) and Thermoluminescence (TL) characterization have been done to observe the effect of neodymium oxide concentration on physical, optical and dosimetric properties of the prepared glass system. XRD pattern exhibit two broad humps and the close analysis revealed the presence of rare-earth induced nano-cristoballite. FT-IR spectra have been deconvoluted to study the presence of different structural groups. Band-gap (Eg) has been calculated using the Kubelka-Munk method and is found to be sensitive to Nd2O3 concentration. Maximum TL intensity is obtained for the 0.2 mol% concentration of rare-earth oxide and the shift in the peak towards lower temperature with the inclusion of Nd2O3 indicates the formation of low-level traps. Our results suggest that, due to high TL efficiency, the glass sample with 0.2 mol% concentration of Nd2O3 is suitable for the dosimetric applications.
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